Goal cutting or like machine



3 Sheets Sheet l.

(No Model.)

P. HURD. GOAL CUTTING 0R LIKE MACHINE.

. VPafnted Mar. 24, 1896.

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.9.0. AN DREW B.G|\N\AM4 PHOTO-LITHO-WASMIN Emil (No Model.) 3sheets-snm V2.

F. HURD. GOAL' CUTTING 0R LIKE MACHINE.

No. 556,985. Paten-ted MaIzZll, 1896.

ANDREW EGRAMAM. PMUTO-IITMDIWASHINGTDKD C.

3 Sheets-I-Shet 3.

'-(NO Model.)

P.. HUB-D. GOAL CUTTING 0R LIKE MACHINE.

' y Patented Mar. 24, 1896.

l l l.

UNITED STATES ATENT OFFICE.

FREDERICK HURD, OF LONDON, ENGLAND.

COAL-CUTTING OR LIKE MACHINE.

SPECIFICATION forming part of Letters Patent No. 556,985, dated March24, 1896.

Application filed August 3, 1893. Serial No. 482,307. (No model.)Patented in England August 4,1892,No. 14,124; in France August 8,1893,No. 232,025; in Belgium August 8, 1893, No. 105,926; in GermanyAugnst 8,1893, No. 76,919; in Viotoria November 3, 1893, No. 10,937; in New SouthWales November 6, 1893, No. 4,715; in Tasmania November 6,1893, No.1,218; in South Australia November 6, 1893, No. 2,589; in New ZealandNovember 11, 1893, No` 6,532; in Western Australia November14, 1893, No.465, and in India April 9, 1894, No. 359.

To all whom it may concern:

Be it known that I, FREDERICK HURD, mining, civil, and mechanicalengineer, a subject of the Queen of Great Britain, residing at 11Grittleton Road, London, in the county of Middlesex, England, haveinvented certain new and useful Improvements in Mining-Machines, (forwhich I have obtained Letters Patent in England, No. 14,124, datedAugust 4, 1892; in France, No. 232,025, dated August 8, 1893; inBelgium, No. 105, 926, dated August 8, 1893; in Germany, No. 76,919,dated August 8, 1893; in Victoria, No. 10, 937, dated November 3, 1893;in New South Wales, No. 4,715, dated November 6, 1893; in Tasmania, No.1,218, dated November 6, 1893; in South Australia, No. 2,589, datedNovember 6, 1893; in New Zealand, No. 6,532, dated November 11, 1893 5in Vestern Australia, No. 465, dated November 14, 1893, and in India,No. 359, dated April 9, 1894,) of which the following is aspecification.

My present invention is designed as an improvement upon the miningmachine described in my application, Serial No. 482,308, iiledsimultaneously herewith, and it relates more particularly to theconstruction of the cutter-bar head of the machine, which carries thedrills and their operating and guiding mechanism, whereby the machine isrendered more suitable for sinking and tunneling.

My invention consists, broadly, in constructing the casin g of themachine carrying one of the drills telescopic, so that as the casing isrevolved a cam-groove carried on the motor-casing, either square, oval,or circular, guides the telescopic section, so that a cut can be made inthe mineral around the central drill in order that the ore, earth, ormineral cut can be easily broken up and excavated; and my inventionfurther consists of certain details of novel construction that will behereinafter fully described, and specifically pointed out in the claims.

In order that my invention may be fully understood I will proceed todescribe the same the drill o.

with reference to the accompanying drawings, in which- Figure l is aperspective view of a miningmachine at work and embodying myimprovements. Fig. 2 is a vertical section of one end of the machine,showing the mechanism for operating the drills; and Fig. 3 is an endview of the machine, partly in section, showing the telescopic portionof the casing which carries the movable drill and also the cam-groovefor guiding the telescopic section as the casing carrying the drills'isrevolved.

In said drawings, A represents the motorcasing provided with the endcasings A A2 and the means g2, g8, and g4 for moving the machinebackward and forward. The motor end casings and the mechanism for movingthe motor are fully described in the application above referred to andthey need not therefore be described in this specification.

B represents a casing inclosing the mechanism for driving the drills oand n. This mechanism consists of the motor-shaft c eX- tending througha collar B' and having a Worm c rigidly mounted thereon and inengagement with a beveled pinion wheel h2 formed integral with asleeve bsurrounding a shaft m. Mounted on the end of this shaft m is a bevelcog-wheel fm in engagement with a bevel cog-wheel m2 mounted on one endof This drill may be of any desired construction, but I prefer toconstruct it as described inthe application above referred to with thedetachable cutter-teeth a secured thereto. Thus it will be seen that asthe motor-shaft c is rotated the drill a will be operated through themechanism above described. The means for operating the central drill nsimultaneously with the drill a consists of the bevel-wheel n2 fixed onthe sleeve b in engagement with the beveled toothed face of the sleevefn', which is rigidlysecured on the drill n.

O represents a cam-groove formed on the end casing A2 and designed toguide the telescopic section l, which carries the drill o, when thecasing is revolved around the central drill n. This groove may be eitherround, oval, square or any other form according to the character of theopening desired to be cut in the mineral.

o2 represents a second cam-groove carried by the casing B, which aids inguiding and steadying the section l.

As will be seen from Fig. 3 the telescopic section Z carrying the drilla and part of the driving mechanism works in an opening formed for it inthe casing B. This section is secured in the said opening by means ofthe rollers o o3 and bolts Z and Z2, which also form axles for the saidrollers. As the casing B is revolved bythe worm i, the worin-wheel t"being rigidly fixed on the casing B, and the worm t' carried by thecasing A and wormwheel '17, the rollers o and o3 move in the grooves oo2 and force or guide the section Z in or out according to the characterof the groove formed, such movement of the section Z being allowed bythe slots Z4 formed in the walls of the opening in the casing B.

The operation of my device is as follows: The machine is brought up tothe face of the mineral and the drills n and a set in motion. Thesedrills are fed into the mineral by the whole machine being moved forwardby the means g2, g3, and g4. 'After the drills have entered the mineraltheir full length the casing B is caused to revolve. This revolution ofthe casing causes the drill a to move about the drill n and cut anopening in the mineral similar to the shape of the cam-grooves. NVhen acomplete revolution has been made by the drill a, both drills arewithdrawn by the machine being moved backward, after which the mineralis broken up and removed. After the material has been removed the sameoperation above described is gone through with again.

In sinking mines the whole machine is mounted in a cage, the mode ofoperation being the same as above described.

Having thus described my invention7 the following is what I claim as newtherein and desire to secure by Letters Patent:

1. In a mining-machine, the combination of a motor, a casing therefor, adrill carried by said casing, means for operating said drill and acasing covering said means, said casing being formed with a telescopicsection having a drill mounted therein, a cam-groove formed on themotor-casing and a roller carried by the telescopic section fitting insaid groove, and suitable means for revolving said second casing,substantially as shown and described.

2. In a mining-machine, the combination of a motor and a casingtherefor, a central drill carried thereby a revoluble casing-headeontaining mechanism for operating said drill, a telescopic sectionprovided vin said casinghead and fitted with a drill and mechanism foroperating such second drill, and means for automatically increasing anddecreasing the distance between the two drills consisting of cam-groovescarried by the motor-casing, and suitable studs or bolts withantifrictiom rollers carried by the telescopic arm `to work in saidcam-grooves, substantially as herein shown and described.

3. In a mining-machine the combination of a motor, a casing therefor, adrill carried thereby, suitable means connected therewith for operatingthe drill by the motor, a casing surrounding said means and adapted tobe revolved, a telescopic section carried by said casing and adapted tobe rotated bythe same gearing as that rotating the first drill,camgrooves carried by the motor-casing, and a connection between thecam-grooves and telescopic section consisting of rollers and boltssecured to the section and carrying the rollers, and slots formed in thecasing in which the bolts work, substantially as shown and described.

FREDERICK IIURD. Vitnesses:

B. J B. MILLS, JCLAUDE K. MILLS.

